Andrew Boyson / net

A stack which works with or without an Mbed os library. Provides IPv4 or IPv6 with a full 1500 byte buffer.

Dependents:   oldheating gps motorhome heating

ip6/slaac.c@200:5acbc41bf469, 2021-05-20 (annotated)

Committer:
andrewboyson
Date:
Thu May 20 14:32:52 2021 +0000
Revision:
200:5acbc41bf469
Parent:
172:9bc3c7b2cca1 
Increased number of arp entries from 20 to 30 to accommodate the number of WIZ devices plus a few incoming port 80 calls from the internet.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
andrewboyson 61:aad055f1b0d1 1 #include <string.h>
andrewboyson 61:aad055f1b0d1 2
andrewboyson 80:4ef1500fca1d 3 #include "mac.h"
andrewboyson 49:1a6336f2b3f9 4 #include "ip6addr.h"
andrewboyson 7:b794780e33b4 5
andrewboyson 7:b794780e33b4 6 char SlaacLinkLocalIp[16];
andrewboyson 172:9bc3c7b2cca1 7 char SlaacUniqueLocalIp[16];
andrewboyson 15:6ca6778168b1 8 char SlaacGlobalIp[16];
andrewboyson 7:b794780e33b4 9
andrewboyson 44:83ce5ace337b 10 int SlaacScope(char* ip)
andrewboyson 35:93c39d260a83 11 {
andrewboyson 172:9bc3c7b2cca1 12 if (Ip6AddrIsSame(ip, SlaacLinkLocalIp)) return SCOPE_LINK_LOCAL;
andrewboyson 172:9bc3c7b2cca1 13 if (Ip6AddrIsSame(ip, SlaacGlobalIp )) return SCOPE_GLOBAL;
andrewboyson 44:83ce5ace337b 14 return SCOPE_NONE;
andrewboyson 35:93c39d260a83 15 }
andrewboyson 49:1a6336f2b3f9 16 void SlaacAddressFromScope(int scope, char* pSrcIp)
andrewboyson 49:1a6336f2b3f9 17 {
andrewboyson 172:9bc3c7b2cca1 18 switch (scope)
andrewboyson 172:9bc3c7b2cca1 19 {
andrewboyson 172:9bc3c7b2cca1 20 case SCOPE_GLOBAL: Ip6AddrCopy(pSrcIp, SlaacGlobalIp ); break;
andrewboyson 172:9bc3c7b2cca1 21 case SCOPE_UNIQUE_LOCAL: Ip6AddrCopy(pSrcIp, SlaacUniqueLocalIp); break;
andrewboyson 172:9bc3c7b2cca1 22 default: Ip6AddrCopy(pSrcIp, SlaacLinkLocalIp ); break;
andrewboyson 172:9bc3c7b2cca1 23 }
andrewboyson 49:1a6336f2b3f9 24 //Note that scope could be SCOPE_NONE if source was multicast in which case should return the link local ip.
andrewboyson 49:1a6336f2b3f9 25 }
andrewboyson 49:1a6336f2b3f9 26
andrewboyson 15:6ca6778168b1 27 void SlaacMakeGlobal(char* pPrefix)
andrewboyson 15:6ca6778168b1 28 {
andrewboyson 15:6ca6778168b1 29 memcpy(SlaacGlobalIp, pPrefix, 8);
andrewboyson 15:6ca6778168b1 30 char* p = SlaacGlobalIp + 8;
andrewboyson 15:6ca6778168b1 31 *p++ = MacLocal[0] | 0x02; //Modified EUI-64
andrewboyson 15:6ca6778168b1 32 *p++ = MacLocal[1];
andrewboyson 15:6ca6778168b1 33 *p++ = MacLocal[2];
andrewboyson 15:6ca6778168b1 34 *p++ = 0xFF;
andrewboyson 15:6ca6778168b1 35 *p++ = 0xFE;
andrewboyson 15:6ca6778168b1 36 *p++ = MacLocal[3];
andrewboyson 15:6ca6778168b1 37 *p++ = MacLocal[4];
andrewboyson 15:6ca6778168b1 38 *p++ = MacLocal[5];
andrewboyson 15:6ca6778168b1 39
andrewboyson 15:6ca6778168b1 40 }
andrewboyson 172:9bc3c7b2cca1 41 void SlaacMakeUniqueLocal(char* pPrefix)
andrewboyson 172:9bc3c7b2cca1 42 {
andrewboyson 172:9bc3c7b2cca1 43 memcpy(SlaacUniqueLocalIp, pPrefix, 8);
andrewboyson 172:9bc3c7b2cca1 44 char* p = SlaacUniqueLocalIp + 8;
andrewboyson 172:9bc3c7b2cca1 45 *p++ = MacLocal[0] | 0x02; //Modified EUI-64
andrewboyson 172:9bc3c7b2cca1 46 *p++ = MacLocal[1];
andrewboyson 172:9bc3c7b2cca1 47 *p++ = MacLocal[2];
andrewboyson 172:9bc3c7b2cca1 48 *p++ = 0xFF;
andrewboyson 172:9bc3c7b2cca1 49 *p++ = 0xFE;
andrewboyson 172:9bc3c7b2cca1 50 *p++ = MacLocal[3];
andrewboyson 172:9bc3c7b2cca1 51 *p++ = MacLocal[4];
andrewboyson 172:9bc3c7b2cca1 52 *p++ = MacLocal[5];
andrewboyson 172:9bc3c7b2cca1 53
andrewboyson 172:9bc3c7b2cca1 54 }
andrewboyson 7:b794780e33b4 55 void SlaacInit()
andrewboyson 7:b794780e33b4 56 {
andrewboyson 37:793b39683406 57 char* p = SlaacLinkLocalIp; //fe80::::202:f7ff:fef2:7d27
andrewboyson 7:b794780e33b4 58 *p++ = 0xFE;
andrewboyson 7:b794780e33b4 59 *p++ = 0x80;
andrewboyson 7:b794780e33b4 60 *p++ = 0x00;
andrewboyson 7:b794780e33b4 61 *p++ = 0x00;
andrewboyson 7:b794780e33b4 62 *p++ = 0x00;
andrewboyson 7:b794780e33b4 63 *p++ = 0x00;
andrewboyson 7:b794780e33b4 64 *p++ = 0x00;
andrewboyson 7:b794780e33b4 65 *p++ = 0x00;
andrewboyson 13:9cd54f7db57a 66 *p++ = MacLocal[0] | 0x02; //Modified EUI-64
andrewboyson 13:9cd54f7db57a 67 *p++ = MacLocal[1];
andrewboyson 13:9cd54f7db57a 68 *p++ = MacLocal[2];
andrewboyson 7:b794780e33b4 69 *p++ = 0xFF;
andrewboyson 7:b794780e33b4 70 *p++ = 0xFE;
andrewboyson 13:9cd54f7db57a 71 *p++ = MacLocal[3];
andrewboyson 13:9cd54f7db57a 72 *p++ = MacLocal[4];
andrewboyson 13:9cd54f7db57a 73 *p++ = MacLocal[5];
andrewboyson 7:b794780e33b4 74 }